CENTERED ON THE WETLANDS: INTEGRATING NEW PHYTOLITH EVIDENCE OF PLANT-USE FROM THE 23,000-YEAR-OLD SITE OF OHALO II, ISRAEL

2017 ◽  
Vol 82 (4) ◽  
pp. 702-722 ◽  
Author(s):  
Monica N. Ramsey ◽  
Arlene M. Rosen ◽  
Dani Nadel

Epipaleolithic hunter-gatherers are often interpreted as playing an important role in the development of early cereal cultivation and subsequent farming economies in the Levant. This focus has come at the expense of understanding these people as resilient foragers who exploited a range of changing micro habitats through the Last Glacial Maximum. New phytolith data from Ohalo II seek to redress this. Ohalo II has the most comprehensive and important macrobotanical assemblage in Southwest Asia for the entire Epipaleolithic period. Here we present a phytolith investigation of 28 sediment samples to make three key contributions. First, by comparing the phytolith assemblage to a sample of the macrobotanical assemblage, we provide a baseline to help inform the interpretation of phytolith assemblages at other sites in Southwest Asia. Second, we highlight patterns of plant use at the site. We identify the importance of wetland plant resources to hut construction and provide evidence that supports previous work suggesting that grass and cereal processing may have been a largely “indoor” activity. Finally, drawing on ethnographic data from the American Great Basin, we reevaluate the significance of wetland plant resources for Epipaleolithic hunter-gatherers and argue that the wetland-centered lifeway at Ohalo II represents a wider Levantine adaptive strategy.

2020 ◽  
Vol 132 (11-12) ◽  
pp. 2669-2683
Author(s):  
L.M. Santi ◽  
A.J. Arnold ◽  
D.E. Ibarra ◽  
C.A. Whicker ◽  
J.A. Mering ◽  
...  

Abstract During the Last Glacial Maximum (LGM) and subsequent deglaciation, the Great Basin in the southwestern United States was covered by numerous extensive closed-basin lakes, in stark contrast with the predominately arid climate observed today. This transition from lakes in the Late Pleistocene to modern aridity implies large changes in the regional water balance. Whether these changes were driven by increased precipitation rates due to changes in atmospheric dynamics, decreased evaporation rates resulting from temperature depression and summer insolation changes, or some combination of the two remains uncertain. The factors contributing to these large-scale changes in hydroclimate are critical to resolve, given that this region is poised to undergo future anthropogenic-forced climate changes with large uncertainties in model simulations for the 21st century. Furthermore, there are ambiguous constraints on the magnitude and even the sign of changes in key hydroclimate variables between the Last Glacial Maximum and the present day in both proxy reconstructions and climate model analyses of the region. Here we report thermodynamically derived estimates of changes in temperature, precipitation, and evaporation rates, as well as the isotopic composition of lake water, using clumped isotope data from an ancient lake in the northwestern Great Basin, Lake Surprise (California). Compared to modern climate, mean annual air temperature at Lake Surprise was 4.7 °C lower during the Last Glacial Maximum, with decreased evaporation rates and similar precipitation rates to modern. During the mid-deglacial period, the growth of Lake Surprise implied that the lake hydrologic budget briefly departed from steady state. Our reconstructions indicate that this growth took place rapidly, while the subsequent lake regression took place over several thousand years. Using models for precipitation and evaporation constrained from clumped isotope results, we determine that the disappearance of Lake Surprise coincided with a moderate increase in lake temperature, along with increasing evaporation rates outpacing increasing precipitation rates. Concomitant analysis of proxy data and climate model simulations for the Last Glacial Maximum are used to provide a robust means to understand past climate change, and by extension, predict how current hydroclimates may respond to expected future climate forcings. We suggest that an expansion of this analysis to more basins across a larger spatial scale could provide valuable insight into proposed climate forcings, and aid in climate model process depiction. Ultimately, our analysis highlights the importance of temperature-driven evaporation as a mechanism for lake growth and retreat in this region.


2020 ◽  
Vol 97 ◽  
pp. 1-41 ◽  
Author(s):  
Erich C. Fisher ◽  
Hayley C. Cawthra ◽  
Irene Esteban ◽  
Antonieta Jerardino ◽  
Frank H. Neumann ◽  
...  

AbstractWaterfall Bluff is a rock shelter in eastern Pondoland, South Africa, adjacent to a narrow continental shelf that limited coastline movements across glacial/interglacial cycles. The archaeological deposits are characterized by well-preserved stratigraphy, faunal, and botanical remains alongside abundant stone artifacts and other materials. A comprehensive dating protocol consisting of 5 optically stimulated luminescence ages and 51 accelerator mass spectrometry 14C ages shows that the record of hunter-gatherer occupations at Waterfall Bluff persisted from the late Pleistocene to the Holocene, spanning the last glacial maximum and the transition from the Pleistocene to the Holocene. Here, we provide detailed descriptions about the sedimentary sequence, chronology, and characteristics of the archaeological deposits at Waterfall Bluff. Remains of marine mollusks and marine fish also show, for the first time, that coastal foraging was a component of some hunter-gatherer groups’ subsistence practices during glacial phases in the late Pleistocene. The presence of marine fish and shellfish further demonstrates that hunter-gatherers selectively targeted coastal resources from intertidal and estuarine habitats. Our results therefore underscore the idea that Pondoland's coastline remained a stable and predictable point on the landscape over the last glacial/interglacial transition being well positioned for hunter-gatherers to access resources from the nearby coastline, narrow continental shelf, and inland areas.


2016 ◽  
Vol 425 ◽  
pp. 49-61 ◽  
Author(s):  
Andreas Maier ◽  
Frank Lehmkuhl ◽  
Patrick Ludwig ◽  
Martin Melles ◽  
Isabell Schmidt ◽  
...  

2019 ◽  
Author(s):  
Giulio Catalano ◽  
Domenico Lo Vetro ◽  
Pier Francesco Fabbri ◽  
Swapan Mallick ◽  
David Reich ◽  
...  

AbstractGrotta d’Oriente, a small coastal cave located on the island of Favignana (Sicily, Italy) is a key site for the study of the early human colonization of Sicily. The individual known as Oriente C was found in the lower portion of an anthropogenic deposit containing typical local Late Upper Palaeolithic (Late Epigravettian) stone assemblages. Two radiocarbon dates on charcoal from the deposit containing the burial are consistent with the archaeological context and refer Oriente C to a period spanning about 14,200-13,800 cal. BP. Anatomical features are close to those of Late Upper Palaeolithic populations of the Mediterranean and show strong affinity with Palaeolithic individuals of San Teodoro. Here we present new ancient DNA data from Oriente C. Our results, confirming previous genetic analysis, suggest a substantial genetic homogeneity among Late Epigravettian hunter-gatherer populations of Central Mediterranean, presumably as a consequence of continuous gene flow among different groups, or a range expansion following the Last Glacial Maximum (LGM).


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